/*
 * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
 * Copyright (c) 2002-2007, Professor Benoit Macq
 * Copyright (c) 2001-2003, David Janssens
 * Copyright (c) 2002-2003, Yannick Verschueren
 * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
 * Copyright (c) 2005, Herve Drolon, FreeImage Team
 * Copyright (c) 2006-2007, Parvatha Elangovan
 * Copyright (c) 2008, Jerome Fimes, Communications & Systemes <jerome.fimes@c-s.fr>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "pi.h"
#include "int.h"
#include "opj_malloc.h"
#include "j2k.h"
/** @defgroup PI PI - Implementation of a packet iterator */
/*@{*/

/** @name Local static functions */
/*@{*/

/**
Get next packet in layer-resolution-component-precinct order.
@param pi packet iterator to modify
@return returns false if pi pointed to the last packet or else returns true
*/
static bool pi_next_lrcp(opj_pi_iterator_t * pi);
/**
Get next packet in resolution-layer-component-precinct order.
@param pi packet iterator to modify
@return returns false if pi pointed to the last packet or else returns true
*/
static bool pi_next_rlcp(opj_pi_iterator_t * pi);
/**
Get next packet in resolution-precinct-component-layer order.
@param pi packet iterator to modify
@return returns false if pi pointed to the last packet or else returns true
*/
static bool pi_next_rpcl(opj_pi_iterator_t * pi);
/**
Get next packet in precinct-component-resolution-layer order.
@param pi packet iterator to modify
@return returns false if pi pointed to the last packet or else returns true
*/
static bool pi_next_pcrl(opj_pi_iterator_t * pi);
/**
Get next packet in component-precinct-resolution-layer order.
@param pi packet iterator to modify
@return returns false if pi pointed to the last packet or else returns true
*/
static bool pi_next_cprl(opj_pi_iterator_t * pi);

/**
 * Updates the coding parameters if the encoding is used with Progression order changes and final (or cinema parameters are used).
 *
 * @param        p_cp                the coding parameters to modify
 * @param        p_tileno        the tile index being concerned.
 * @param        p_tx0                X0 parameter for the tile
 * @param        p_tx1                X1 parameter for the tile
 * @param        p_ty0                Y0 parameter for the tile
 * @param        p_ty1                Y1 parameter for the tile
 * @param        p_max_prec        the maximum precision for all the bands of the tile
 * @param        p_max_res        the maximum number of resolutions for all the poc inside the tile.
 * @param        dx_min                the minimum dx of all the components of all the resolutions for the tile.
 * @param        dy_min                the minimum dy of all the components of all the resolutions for the tile.
 */
void pi_update_encode_poc_and_final (
                                                                         opj_cp_t *p_cp,
                                                                         OPJ_UINT32 p_tileno,
                                                                         OPJ_INT32 p_tx0,
                                                                         OPJ_INT32 p_tx1,
                                                                         OPJ_INT32 p_ty0,
                                                                         OPJ_INT32 p_ty1,
                                                                         OPJ_UINT32 p_max_prec,
                                                                         OPJ_UINT32 p_max_res,
                                     OPJ_UINT32 p_dx_min,
                                                                         OPJ_UINT32 p_dy_min);

/**
 * Updates the coding parameters if the encoding is not used with Progression order changes and final (and cinema parameters are used).
 *
 * @param        p_cp                the coding parameters to modify
 * @param        p_tileno        the tile index being concerned.
 * @param        p_tx0                X0 parameter for the tile
 * @param        p_tx1                X1 parameter for the tile
 * @param        p_ty0                Y0 parameter for the tile
 * @param        p_ty1                Y1 parameter for the tile
 * @param        p_max_prec        the maximum precision for all the bands of the tile
 * @param        p_max_res        the maximum number of resolutions for all the poc inside the tile.
 * @param        dx_min                the minimum dx of all the components of all the resolutions for the tile.
 * @param        dy_min                the minimum dy of all the components of all the resolutions for the tile.
 */
void pi_update_encode_not_poc (
                                                                opj_cp_t *p_cp,
                                                                OPJ_UINT32 p_num_comps,
                                                                OPJ_UINT32 p_tileno,
                                                                OPJ_INT32 p_tx0,
                                                                OPJ_INT32 p_tx1,
                                                                OPJ_INT32 p_ty0,
                                                                OPJ_INT32 p_ty1,
                                                                OPJ_UINT32 p_max_prec,
                                                                OPJ_UINT32 p_max_res,
                                OPJ_UINT32 p_dx_min,
                                                                OPJ_UINT32 p_dy_min);

/**
 * Gets the encoding parameters needed to update the coding parameters and all the pocs.
 *
 * @param        p_image                        the image being encoded.
 * @param        p_cp                        the coding parameters.
 * @param        tileno                        the tile index of the tile being encoded.
 * @param        p_tx0                        pointer that will hold the X0 parameter for the tile
 * @param        p_tx1                        pointer that will hold the X1 parameter for the tile
 * @param        p_ty0                        pointer that will hold the Y0 parameter for the tile
 * @param        p_ty1                        pointer that will hold the Y1 parameter for the tile
 * @param        p_max_prec                pointer that will hold the the maximum precision for all the bands of the tile
 * @param        p_max_res                pointer that will hold the the maximum number of resolutions for all the poc inside the tile.
 * @param        dx_min                        pointer that will hold the the minimum dx of all the components of all the resolutions for the tile.
 * @param        dy_min                        pointer that will hold the the minimum dy of all the components of all the resolutions for the tile.
 */
void get_encoding_parameters(
                                                                const opj_image_t *p_image,
                                                                const opj_cp_t *p_cp,
                                                                OPJ_UINT32  tileno,
                                                                OPJ_INT32  * p_tx0,
                                                                OPJ_INT32 * p_tx1,
                                                                OPJ_INT32 * p_ty0,
                                                                OPJ_INT32 * p_ty1,
                                                                OPJ_UINT32 * p_dx_min,
                                                                OPJ_UINT32 * p_dy_min,
                                                                OPJ_UINT32 * p_max_prec,
                                                                OPJ_UINT32 * p_max_res
                                                        );

/**
 * Gets the encoding parameters needed to update the coding parameters and all the pocs.
 * The precinct widths, heights, dx and dy for each component at each resolution will be stored as well.
 * the last parameter of the function should be an array of pointers of size nb components, each pointer leading
 * to an area of size 4 * max_res. The data is stored inside this area with the following pattern :
 * dx_compi_res0 , dy_compi_res0 , w_compi_res0, h_compi_res0 , dx_compi_res1 , dy_compi_res1 , w_compi_res1, h_compi_res1 , ...
 *
 * @param        p_image                        the image being encoded.
 * @param        p_cp                        the coding parameters.
 * @param        tileno                        the tile index of the tile being encoded.
 * @param        p_tx0                        pointer that will hold the X0 parameter for the tile
 * @param        p_tx1                        pointer that will hold the X1 parameter for the tile
 * @param        p_ty0                        pointer that will hold the Y0 parameter for the tile
 * @param        p_ty1                        pointer that will hold the Y1 parameter for the tile
 * @param        p_max_prec                pointer that will hold the the maximum precision for all the bands of the tile
 * @param        p_max_res                pointer that will hold the the maximum number of resolutions for all the poc inside the tile.
 * @param        dx_min                        pointer that will hold the the minimum dx of all the components of all the resolutions for the tile.
 * @param        dy_min                        pointer that will hold the the minimum dy of all the components of all the resolutions for the tile.
 * @param        p_resolutions        pointer to an area corresponding to the one described above.
 */
void get_all_encoding_parameters(
                                                                const opj_image_t *p_image,
                                                                const opj_cp_t *p_cp,
                                                                OPJ_UINT32 tileno,
                                                                OPJ_INT32 * p_tx0,
                                                                OPJ_INT32 * p_tx1,
                                                                OPJ_INT32 * p_ty0,
                                                                OPJ_INT32 * p_ty1,
                                                                OPJ_UINT32 * p_dx_min,
                                                                OPJ_UINT32 * p_dy_min,
                                                                OPJ_UINT32 * p_max_prec,
                                                                OPJ_UINT32 * p_max_res,
                                                                OPJ_UINT32 ** p_resolutions
                                                        );
/**
 * Allocates memory for a packet iterator. Data and data sizes are set by this operation.
 * No other data is set. The include section of the packet  iterator is not allocated.
 *
 * @param        p_image                the image used to initialize the packet iterator (in fact only the number of components is relevant.
 * @param        p_cp                the coding parameters.
 * @param        p_tile_no        the index of the tile from which creating the packet iterator.
 */
opj_pi_iterator_t * pi_create(
                                                                const opj_image_t *image,
                                                                const opj_cp_t *cp,
                                                                OPJ_UINT32 tileno
                                                        );
void pi_update_decode_not_poc (opj_pi_iterator_t * p_pi,opj_tcp_t * p_tcp,OPJ_UINT32 p_max_precision,OPJ_UINT32 p_max_res);
void pi_update_decode_poc (opj_pi_iterator_t * p_pi,opj_tcp_t * p_tcp,OPJ_UINT32 p_max_precision,OPJ_UINT32 p_max_res);


/*@}*/

/*@}*/

/*
==========================================================
   local functions
==========================================================
*/

static bool pi_next_lrcp(opj_pi_iterator_t * pi) {
        opj_pi_comp_t *comp = 00;
        opj_pi_resolution_t *res = 00;
        OPJ_UINT32 index = 0;

        if (!pi->first) {
                comp = &pi->comps[pi->compno];
                goto LABEL_SKIP;
        } else {
                pi->first = 0;
        }

        for (pi->layno = pi->poc.layno0; pi->layno < pi->poc.layno1; pi->layno++) {
                for (pi->resno = pi->poc.resno0; pi->resno < pi->poc.resno1;
                pi->resno++) {
                        for (pi->compno = pi->poc.compno0; pi->compno < pi->poc.compno1; pi->compno++) {
                                comp = &pi->comps[pi->compno];
                                if (pi->resno >= comp->numresolutions) {
                                        continue;
                                }
                                res = &comp->resolutions[pi->resno];
                                if (!pi->tp_on){
                                        pi->poc.precno1 = res->pw * res->ph;
                                }
                                for (pi->precno = pi->poc.precno0; pi->precno < pi->poc.precno1; pi->precno++) {
                                        index = pi->layno * pi->step_l + pi->resno * pi->step_r + pi->compno * pi->step_c + pi->precno * pi->step_p;
                                        if (!pi->include[index]) {
                                                pi->include[index] = 1;
                                                return true;
                                        }
LABEL_SKIP:;
                                }
                        }
                }
        }

        return false;
}

static bool pi_next_rlcp(opj_pi_iterator_t * pi) {
        opj_pi_comp_t *comp = 00;
        opj_pi_resolution_t *res = 00;
        OPJ_UINT32 index = 0;

        if (!pi->first) {
                comp = &pi->comps[pi->compno];
                goto LABEL_SKIP;
        } else {
                pi->first = 0;
        }

        for (pi->resno = pi->poc.resno0; pi->resno < pi->poc.resno1; pi->resno++) {
                for (pi->layno = pi->poc.layno0; pi->layno < pi->poc.layno1; pi->layno++) {
                        for (pi->compno = pi->poc.compno0; pi->compno < pi->poc.compno1; pi->compno++) {
                                comp = &pi->comps[pi->compno];
                                if (pi->resno >= comp->numresolutions) {
                                        continue;
                                }
                                res = &comp->resolutions[pi->resno];
                                if(!pi->tp_on){
                                        pi->poc.precno1 = res->pw * res->ph;
                                }
                                for (pi->precno = pi->poc.precno0; pi->precno < pi->poc.precno1; pi->precno++) {
                                        index = pi->layno * pi->step_l + pi->resno * pi->step_r + pi->compno * pi->step_c + pi->precno * pi->step_p;
                                        if (!pi->include[index]) {
                                                pi->include[index] = 1;
                                                return true;
                                        }
LABEL_SKIP:;
                                }
                        }
                }
        }

        return false;
}

static bool pi_next_rpcl(opj_pi_iterator_t * pi) {
        opj_pi_comp_t *comp = 00;
        opj_pi_resolution_t *res = 00;
        OPJ_UINT32 index = 0;

        if (!pi->first) {
                goto LABEL_SKIP;
        } else {
                OPJ_UINT32 compno, resno;
                pi->first = 0;
                pi->dx = 0;
                pi->dy = 0;
                for (compno = 0; compno < pi->numcomps; compno++) {
                        comp = &pi->comps[compno];
                        for (resno = 0; resno < comp->numresolutions; resno++) {
                                OPJ_UINT32 dx, dy;
                                res = &comp->resolutions[resno];
                                dx = comp->dx * (1 << (res->pdx + comp->numresolutions - 1 - resno));
                                dy = comp->dy * (1 << (res->pdy + comp->numresolutions - 1 - resno));
                                pi->dx = !pi->dx ? dx : int_min(pi->dx, dx);
                                pi->dy = !pi->dy ? dy : int_min(pi->dy, dy);
                        }
                }
        }
if (!pi->tp_on){
                        pi->poc.ty0 = pi->ty0;
                        pi->poc.tx0 = pi->tx0;
                        pi->poc.ty1 = pi->ty1;
                        pi->poc.tx1 = pi->tx1;
                }
        for (pi->resno = pi->poc.resno0; pi->resno < pi->poc.resno1; pi->resno++) {
                for (pi->y = pi->poc.ty0; pi->y < pi->poc.ty1; pi->y += pi->dy - (pi->y % pi->dy)) {
                        for (pi->x = pi->poc.tx0; pi->x < pi->poc.tx1; pi->x += pi->dx - (pi->x % pi->dx)) {
                                for (pi->compno = pi->poc.compno0; pi->compno < pi->poc.compno1; pi->compno++) {
                                        OPJ_UINT32 levelno;
                                        OPJ_INT32 trx0, try0;
                                        OPJ_INT32  trx1, try1;
                                        OPJ_UINT32  rpx, rpy;
                                        OPJ_INT32  prci, prcj;
                                        comp = &pi->comps[pi->compno];
                                        if (pi->resno >= comp->numresolutions) {
                                                continue;
                                        }
                                        res = &comp->resolutions[pi->resno];
                                        levelno = comp->numresolutions - 1 - pi->resno;
                                        trx0 = int_ceildiv(pi->tx0, comp->dx << levelno);
                                        try0 = int_ceildiv(pi->ty0, comp->dy << levelno);
                                        trx1 = int_ceildiv(pi->tx1, comp->dx << levelno);
                                        try1 = int_ceildiv(pi->ty1, comp->dy << levelno);
                                        rpx = res->pdx + levelno;
                                        rpy = res->pdy + levelno;
                                        if (!((pi->y % (comp->dy << rpy) == 0) || ((pi->y == pi->ty0) && ((try0 << levelno) % (1 << rpy))))){
                                                continue;
                                        }
                                        if (!((pi->x % (comp->dx << rpx) == 0) || ((pi->x == pi->tx0) && ((trx0 << levelno) % (1 << rpx))))){
                                                continue;
                                        }

                                        if ((res->pw==0)||(res->ph==0)) continue;

                                        if ((trx0==trx1)||(try0==try1)) continue;

                                        prci = int_floordivpow2(int_ceildiv(pi->x, comp->dx << levelno), res->pdx)
                                                 - int_floordivpow2(trx0, res->pdx);
                                        prcj = int_floordivpow2(int_ceildiv(pi->y, comp->dy << levelno), res->pdy)
                                                 - int_floordivpow2(try0, res->pdy);
                                        pi->precno = prci + prcj * res->pw;
                                        for (pi->layno = pi->poc.layno0; pi->layno < pi->poc.layno1; pi->layno++) {
                                                index = pi->layno * pi->step_l + pi->resno * pi->step_r + pi->compno * pi->step_c + pi->precno * pi->step_p;
                                                if (!pi->include[index]) {
                                                        pi->include[index] = 1;
                                                        return true;
                                                }
LABEL_SKIP:;
                                        }
                                }
                        }
                }
        }

        return false;
}

static bool pi_next_pcrl(opj_pi_iterator_t * pi) {
        opj_pi_comp_t *comp = 00;
        opj_pi_resolution_t *res = 00;
        OPJ_UINT32 index = 0;

        if (!pi->first) {
                comp = &pi->comps[pi->compno];
                goto LABEL_SKIP;
        } else {
                OPJ_UINT32 compno, resno;
                pi->first = 0;
                pi->dx = 0;
                pi->dy = 0;
                for (compno = 0; compno < pi->numcomps; compno++) {
                        comp = &pi->comps[compno];
                        for (resno = 0; resno < comp->numresolutions; resno++) {
                                OPJ_UINT32 dx, dy;
                                res = &comp->resolutions[resno];
                                dx = comp->dx * (1 << (res->pdx + comp->numresolutions - 1 - resno));
                                dy = comp->dy * (1 << (res->pdy + comp->numresolutions - 1 - resno));
                                pi->dx = !pi->dx ? dx : int_min(pi->dx, dx);
                                pi->dy = !pi->dy ? dy : int_min(pi->dy, dy);
                        }
                }
        }
        if (!pi->tp_on){
                        pi->poc.ty0 = pi->ty0;
                        pi->poc.tx0 = pi->tx0;
                        pi->poc.ty1 = pi->ty1;
                        pi->poc.tx1 = pi->tx1;
                }
        for (pi->y = pi->poc.ty0; pi->y < pi->poc.ty1; pi->y += pi->dy - (pi->y % pi->dy)) {
                for (pi->x = pi->poc.tx0; pi->x < pi->poc.tx1; pi->x += pi->dx - (pi->x % pi->dx)) {
                        for (pi->compno = pi->poc.compno0; pi->compno < pi->poc.compno1; pi->compno++) {
                                comp = &pi->comps[pi->compno];
                                // TODO
                                for (pi->resno = pi->poc.resno0; pi->resno < uint_min(pi->poc.resno1, comp->numresolutions); pi->resno++) {
                                        OPJ_UINT32 levelno;
                                        OPJ_INT32 trx0, try0;
                                        OPJ_INT32 trx1, try1;
                                        OPJ_UINT32 rpx, rpy;
                                        OPJ_INT32 prci, prcj;
                                        res = &comp->resolutions[pi->resno];
                                        levelno = comp->numresolutions - 1 - pi->resno;
                                        trx0 = int_ceildiv(pi->tx0, comp->dx << levelno);
                                        try0 = int_ceildiv(pi->ty0, comp->dy << levelno);
                                        trx1 = int_ceildiv(pi->tx1, comp->dx << levelno);
                                        try1 = int_ceildiv(pi->ty1, comp->dy << levelno);
                                        rpx = res->pdx + levelno;
                                        rpy = res->pdy + levelno;
                                        if (!((pi->y % (comp->dy << rpy) == 0) || ((pi->y == pi->ty0) && ((try0 << levelno) % (1 << rpy))))){
                                                continue;
                                        }
                                        if (!((pi->x % (comp->dx << rpx) == 0) || ((pi->x == pi->tx0) && ((trx0 << levelno) % (1 << rpx))))){
                                                continue;
                                        }

                                        if ((res->pw==0)||(res->ph==0)) continue;

                                        if ((trx0==trx1)||(try0==try1)) continue;

                                        prci = int_floordivpow2(int_ceildiv(pi->x, comp->dx << levelno), res->pdx)
                                                 - int_floordivpow2(trx0, res->pdx);
                                        prcj = int_floordivpow2(int_ceildiv(pi->y, comp->dy << levelno), res->pdy)
                                                 - int_floordivpow2(try0, res->pdy);
                                        pi->precno = prci + prcj * res->pw;
                                        for (pi->layno = pi->poc.layno0; pi->layno < pi->poc.layno1; pi->layno++) {
                                                index = pi->layno * pi->step_l + pi->resno * pi->step_r + pi->compno * pi->step_c + pi->precno * pi->step_p;
                                                if (!pi->include[index]) {
                                                        pi->include[index] = 1;
                                                        return true;
                                                }
LABEL_SKIP:;
                                        }
                                }
                        }
                }
        }

        return false;
}

static bool pi_next_cprl(opj_pi_iterator_t * pi) {
        opj_pi_comp_t *comp = 00;
        opj_pi_resolution_t *res = 00;
        OPJ_UINT32 index = 0;

        if (!pi->first) {
                comp = &pi->comps[pi->compno];
                goto LABEL_SKIP;
        } else {
                pi->first = 0;
        }

        for (pi->compno = pi->poc.compno0; pi->compno < pi->poc.compno1; pi->compno++) {
                OPJ_UINT32 resno;
                comp = &pi->comps[pi->compno];
                pi->dx = 0;
                pi->dy = 0;
                for (resno = 0; resno < comp->numresolutions; resno++) {
                        OPJ_UINT32 dx, dy;
                        res = &comp->resolutions[resno];
                        dx = comp->dx * (1 << (res->pdx + comp->numresolutions - 1 - resno));
                        dy = comp->dy * (1 << (res->pdy + comp->numresolutions - 1 - resno));
                        pi->dx = !pi->dx ? dx : int_min(pi->dx, dx);
                        pi->dy = !pi->dy ? dy : int_min(pi->dy, dy);
                }
                if (!pi->tp_on){
                        pi->poc.ty0 = pi->ty0;
                        pi->poc.tx0 = pi->tx0;
                        pi->poc.ty1 = pi->ty1;
                        pi->poc.tx1 = pi->tx1;
                }
                for (pi->y = pi->poc.ty0; pi->y < pi->poc.ty1; pi->y += pi->dy - (pi->y % pi->dy)) {
                        for (pi->x = pi->poc.tx0; pi->x < pi->poc.tx1; pi->x += pi->dx - (pi->x % pi->dx)) {
                                // TODO
                                for (pi->resno = pi->poc.resno0; pi->resno < uint_min(pi->poc.resno1, comp->numresolutions); pi->resno++) {
                                        OPJ_UINT32 levelno;
                                        OPJ_INT32 trx0, try0;
                                        OPJ_INT32 trx1, try1;
                                        OPJ_UINT32 rpx, rpy;
                                        OPJ_INT32 prci, prcj;
                                        res = &comp->resolutions[pi->resno];
                                        levelno = comp->numresolutions - 1 - pi->resno;
                                        trx0 = int_ceildiv(pi->tx0, comp->dx << levelno);
                                        try0 = int_ceildiv(pi->ty0, comp->dy << levelno);
                                        trx1 = int_ceildiv(pi->tx1, comp->dx << levelno);
                                        try1 = int_ceildiv(pi->ty1, comp->dy << levelno);
                                        rpx = res->pdx + levelno;
                                        rpy = res->pdy + levelno;
                                        if (!((pi->y % (comp->dy << rpy) == 0) || ((pi->y == pi->ty0) && ((try0 << levelno) % (1 << rpy))))){
                                                continue;
                                        }
                                        if (!((pi->x % (comp->dx << rpx) == 0) || ((pi->x == pi->tx0) && ((trx0 << levelno) % (1 << rpx))))){
                                                continue;
                                        }

                                        if ((res->pw==0)||(res->ph==0)) continue;

                                        if ((trx0==trx1)||(try0==try1)) continue;

                                        prci = int_floordivpow2(int_ceildiv(pi->x, comp->dx << levelno), res->pdx)
                                                 - int_floordivpow2(trx0, res->pdx);
                                        prcj = int_floordivpow2(int_ceildiv(pi->y, comp->dy << levelno), res->pdy)
                                                 - int_floordivpow2(try0, res->pdy);
                                        pi->precno = prci + prcj * res->pw;
                                        for (pi->layno = pi->poc.layno0; pi->layno < pi->poc.layno1; pi->layno++) {
                                                index = pi->layno * pi->step_l + pi->resno * pi->step_r + pi->compno * pi->step_c + pi->precno * pi->step_p;
                                                if (!pi->include[index]) {
                                                        pi->include[index] = 1;
                                                        return true;
                                                }
LABEL_SKIP:;
                                        }
                                }
                        }
                }
        }

        return false;
}

/*
==========================================================
   Packet iterator interface
==========================================================
*/
opj_pi_iterator_t *pi_create_decode(
                                                                                opj_image_t *p_image,
                                                                                opj_cp_t *p_cp,
                                                                                OPJ_UINT32 p_tile_no
                                                                                )
{
        // loop
        OPJ_UINT32 pino;
        OPJ_UINT32 compno, resno;

        // to store w, h, dx and dy fro all components and resolutions
        OPJ_UINT32 * l_tmp_data;
        OPJ_UINT32 ** l_tmp_ptr;

        // encoding prameters to set
        OPJ_UINT32 l_max_res;
        OPJ_UINT32 l_max_prec;
        OPJ_INT32 l_tx0,l_tx1,l_ty0,l_ty1;
        OPJ_UINT32 l_dx_min,l_dy_min;
        OPJ_UINT32 l_bound;
        OPJ_UINT32 l_step_p , l_step_c , l_step_r , l_step_l ;
        OPJ_UINT32 l_data_stride;

        // pointers
        opj_pi_iterator_t *l_pi = 00;
        opj_tcp_t *l_tcp = 00;
        const opj_tccp_t *l_tccp = 00;
        opj_pi_comp_t *l_current_comp = 00;
        opj_image_comp_t * l_img_comp = 00;
        opj_pi_iterator_t * l_current_pi = 00;
        OPJ_UINT32 * l_encoding_value_ptr = 00;

        // preconditions in debug
        assert(p_cp != 00);
        assert(p_image != 00);
        assert(p_tile_no < p_cp->tw * p_cp->th);

        // initializations
        l_tcp = &p_cp->tcps[p_tile_no];
        l_bound = l_tcp->numpocs+1;

        l_data_stride = 4 * J2K_MAXRLVLS;
        l_tmp_data = (OPJ_UINT32*)opj_malloc(
                l_data_stride * p_image->numcomps * sizeof(OPJ_UINT32));
        if
                (! l_tmp_data)
        {
                return 00;
        }
        l_tmp_ptr = (OPJ_UINT32**)opj_malloc(
                p_image->numcomps * sizeof(OPJ_UINT32 *));
        if
                (! l_tmp_ptr)
        {
                opj_free(l_tmp_data);
                return 00;
        }

        // memory allocation for pi
        l_pi = pi_create(p_image,p_cp,p_tile_no);
        if
                (!l_pi)
        {
                opj_free(l_tmp_data);
                opj_free(l_tmp_ptr);
                return 00;
        }

        l_encoding_value_ptr = l_tmp_data;
        // update pointer array
        for
                (compno = 0; compno < p_image->numcomps; ++compno)
        {
                l_tmp_ptr[compno] = l_encoding_value_ptr;
                l_encoding_value_ptr += l_data_stride;
        }
        // get encoding parameters
        get_all_encoding_parameters(p_image,p_cp,p_tile_no,&l_tx0,&l_tx1,&l_ty0,&l_ty1,&l_dx_min,&l_dy_min,&l_max_prec,&l_max_res,l_tmp_ptr);

        // step calculations
        l_step_p = 1;
        l_step_c = l_max_prec * l_step_p;
        l_step_r = p_image->numcomps * l_step_c;
        l_step_l = l_max_res * l_step_r;

        // set values for first packet iterator
        l_current_pi = l_pi;

        // memory allocation for include
        l_current_pi->include = (OPJ_INT16*) opj_calloc(l_tcp->numlayers * l_step_l, sizeof(OPJ_INT16));
        if
                (!l_current_pi->include)
        {
                opj_free(l_tmp_data);
                opj_free(l_tmp_ptr);
                pi_destroy(l_pi, l_bound);
                return 00;
        }
        memset(l_current_pi->include,0,l_tcp->numlayers * l_step_l* sizeof(OPJ_INT16));

        // special treatment for the first packet iterator
        l_current_comp = l_current_pi->comps;
        l_img_comp = p_image->comps;
        l_tccp = l_tcp->tccps;

        l_current_pi->tx0 = l_tx0;
        l_current_pi->ty0 = l_ty0;
        l_current_pi->tx1 = l_tx1;
        l_current_pi->ty1 = l_ty1;

        //l_current_pi->dx = l_img_comp->dx;
        //l_current_pi->dy = l_img_comp->dy;

        l_current_pi->step_p = l_step_p;
        l_current_pi->step_c = l_step_c;
        l_current_pi->step_r = l_step_r;
        l_current_pi->step_l = l_step_l;

        /* allocation for components and number of components has already been calculated by pi_create */
        for
                (compno = 0; compno < l_current_pi->numcomps; ++compno)
        {
                opj_pi_resolution_t *l_res = l_current_comp->resolutions;
                l_encoding_value_ptr = l_tmp_ptr[compno];

                l_current_comp->dx = l_img_comp->dx;
                l_current_comp->dy = l_img_comp->dy;
                /* resolutions have already been initialized */
                for
                        (resno = 0; resno < l_current_comp->numresolutions; resno++)
                {
                        l_res->pdx = *(l_encoding_value_ptr++);
                        l_res->pdy = *(l_encoding_value_ptr++);
                        l_res->pw =  *(l_encoding_value_ptr++);
                        l_res->ph =  *(l_encoding_value_ptr++);
                        ++l_res;
                }
                ++l_current_comp;
                ++l_img_comp;
                ++l_tccp;
        }
        ++l_current_pi;

        for
                (pino = 1 ; pino<l_bound ; ++pino )
        {
                opj_pi_comp_t *l_current_comp = l_current_pi->comps;
                opj_image_comp_t * l_img_comp = p_image->comps;
                l_tccp = l_tcp->tccps;

                l_current_pi->tx0 = l_tx0;
                l_current_pi->ty0 = l_ty0;
                l_current_pi->tx1 = l_tx1;
                l_current_pi->ty1 = l_ty1;
                //l_current_pi->dx = l_dx_min;
                //l_current_pi->dy = l_dy_min;
                l_current_pi->step_p = l_step_p;
                l_current_pi->step_c = l_step_c;
                l_current_pi->step_r = l_step_r;
                l_current_pi->step_l = l_step_l;

                /* allocation for components and number of components has already been calculated by pi_create */
                for
                        (compno = 0; compno < l_current_pi->numcomps; ++compno)
                {
                        opj_pi_resolution_t *l_res = l_current_comp->resolutions;
                        l_encoding_value_ptr = l_tmp_ptr[compno];

                        l_current_comp->dx = l_img_comp->dx;
                        l_current_comp->dy = l_img_comp->dy;
                        /* resolutions have already been initialized */
                        for
                                (resno = 0; resno < l_current_comp->numresolutions; resno++)
                        {
                                l_res->pdx = *(l_encoding_value_ptr++);
                                l_res->pdy = *(l_encoding_value_ptr++);
                                l_res->pw =  *(l_encoding_value_ptr++);
                                l_res->ph =  *(l_encoding_value_ptr++);
                                ++l_res;
                        }
                        ++l_current_comp;
                        ++l_img_comp;
                        ++l_tccp;
                }
                // special treatment
                l_current_pi->include = (l_current_pi-1)->include;
                ++l_current_pi;
        }
        opj_free(l_tmp_data);
        l_tmp_data = 00;
        opj_free(l_tmp_ptr);
        l_tmp_ptr = 00;
        if
                (l_tcp->POC)
        {
                pi_update_decode_poc (l_pi,l_tcp,l_max_prec,l_max_res);
        }
        else
        {
                pi_update_decode_not_poc(l_pi,l_tcp,l_max_prec,l_max_res);
        }
        return l_pi;
}

void pi_update_decode_poc (opj_pi_iterator_t * p_pi,opj_tcp_t * p_tcp,OPJ_UINT32 p_max_precision,OPJ_UINT32 p_max_res)
{
        // loop
        OPJ_UINT32 pino;

        // encoding prameters to set
        OPJ_UINT32 l_bound;

        opj_pi_iterator_t * l_current_pi = 00;
        opj_poc_t* l_current_poc = 0;

        // preconditions in debug
        assert(p_pi != 00);
        assert(p_tcp != 00);

        // initializations
        l_bound = p_tcp->numpocs+1;
        l_current_pi = p_pi;
        l_current_poc = p_tcp->pocs;

        for
                (pino = 0;pino<l_bound;++pino)
        {
                l_current_pi->poc.prg = l_current_poc->prg;
                l_current_pi->first = 1;

                l_current_pi->poc.resno0 = l_current_poc->resno0;
                l_current_pi->poc.compno0 = l_current_poc->compno0;
                l_current_pi->poc.layno0 = 0;
                l_current_pi->poc.precno0 = 0;
                l_current_pi->poc.resno1 = l_current_poc->resno1;
                l_current_pi->poc.compno1 = l_current_poc->compno1;
                l_current_pi->poc.layno1 = l_current_poc->layno1;
                l_current_pi->poc.precno1 = p_max_precision;
                ++l_current_pi;
                ++l_current_poc;
        }
}

void pi_update_decode_not_poc (opj_pi_iterator_t * p_pi,opj_tcp_t * p_tcp,OPJ_UINT32 p_max_precision,OPJ_UINT32 p_max_res)
{
        // loop
        OPJ_UINT32 pino;

        // encoding prameters to set
        OPJ_UINT32 l_bound;

        opj_pi_iterator_t * l_current_pi = 00;
        // preconditions in debug
        assert(p_tcp != 00);
        assert(p_pi != 00);

        // initializations
        l_bound = p_tcp->numpocs+1;
        l_current_pi = p_pi;

        for
                (pino = 0;pino<l_bound;++pino)
        {
                l_current_pi->poc.prg = p_tcp->prg;
                l_current_pi->first = 1;
                l_current_pi->poc.resno0 = 0;
                l_current_pi->poc.compno0 = 0;
                l_current_pi->poc.layno0 = 0;
                l_current_pi->poc.precno0 = 0;
                l_current_pi->poc.resno1 = p_max_res;
                l_current_pi->poc.compno1 = l_current_pi->numcomps;
                l_current_pi->poc.layno1 = p_tcp->numlayers;
                l_current_pi->poc.precno1 = p_max_precision;
                ++l_current_pi;
        }
}

/**
 * Creates a packet iterator for encoding.
 *
 * @param        p_image                the image being encoded.
 * @param        p_cp                the coding parameters.
 * @param        p_tile_no        index of the tile being encoded.
 * @param        p_t2_mode        the type of pass for generating the packet iterator
 * @return        a list of packet iterator that points to the first packet of the tile (not true).
*/
opj_pi_iterator_t *pi_initialise_encode(
                                                                                const opj_image_t *p_image,
                                                                                opj_cp_t *p_cp,
                                                                                OPJ_UINT32 p_tile_no,
                                                                                J2K_T2_MODE p_t2_mode
                                                                                )
{
        // loop
        OPJ_UINT32 pino;
        OPJ_UINT32 compno, resno;

        // to store w, h, dx and dy fro all components and resolutions
        OPJ_UINT32 * l_tmp_data;
        OPJ_UINT32 ** l_tmp_ptr;

        // encoding prameters to set
        OPJ_UINT32 l_max_res;
        OPJ_UINT32 l_max_prec;
        OPJ_INT32 l_tx0,l_tx1,l_ty0,l_ty1;
        OPJ_UINT32 l_dx_min,l_dy_min;
        OPJ_UINT32 l_bound;
        OPJ_UINT32 l_step_p , l_step_c , l_step_r , l_step_l ;
        OPJ_UINT32 l_data_stride;

        // pointers
        opj_pi_iterator_t *l_pi = 00;
        opj_tcp_t *l_tcp = 00;
        const opj_tccp_t *l_tccp = 00;
        opj_pi_comp_t *l_current_comp = 00;
        opj_image_comp_t * l_img_comp = 00;
        opj_pi_iterator_t * l_current_pi = 00;
        OPJ_UINT32 * l_encoding_value_ptr = 00;

        // preconditions in debug
        assert(p_cp != 00);
        assert(p_image != 00);
        assert(p_tile_no < p_cp->tw * p_cp->th);

        // initializations
        l_tcp = &p_cp->tcps[p_tile_no];
        l_bound = l_tcp->numpocs+1;

        l_data_stride = 4 * J2K_MAXRLVLS;
        l_tmp_data = (OPJ_UINT32*)opj_malloc(
                l_data_stride * p_image->numcomps * sizeof(OPJ_UINT32));
        if
                (! l_tmp_data)
        {
                return 00;
        }
        l_tmp_ptr = (OPJ_UINT32**)opj_malloc(
                p_image->numcomps * sizeof(OPJ_UINT32 *));
        if
                (! l_tmp_ptr)
        {
                opj_free(l_tmp_data);
                return 00;
        }

        // memory allocation for pi
        l_pi = pi_create(p_image,p_cp,p_tile_no);
        if
                (!l_pi)
        {
                opj_free(l_tmp_data);
                opj_free(l_tmp_ptr);
                return 00;
        }

        l_encoding_value_ptr = l_tmp_data;
        // update pointer array
        for
                (compno = 0; compno < p_image->numcomps; ++compno)
        {
                l_tmp_ptr[compno] = l_encoding_value_ptr;
                l_encoding_value_ptr += l_data_stride;
        }
        // get encoding parameters
        get_all_encoding_parameters(p_image,p_cp,p_tile_no,&l_tx0,&l_tx1,&l_ty0,&l_ty1,&l_dx_min,&l_dy_min,&l_max_prec,&l_max_res,l_tmp_ptr);

        // step calculations
        l_step_p = 1;
        l_step_c = l_max_prec * l_step_p;
        l_step_r = p_image->numcomps * l_step_c;
        l_step_l = l_max_res * l_step_r;

        // set values for first packet iterator
        l_pi->tp_on = p_cp->m_specific_param.m_enc.m_tp_on;
        l_current_pi = l_pi;

        // memory allocation for include
        l_current_pi->include = (OPJ_INT16*) opj_calloc(l_tcp->numlayers * l_step_l, sizeof(OPJ_INT16));
        if
                (!l_current_pi->include)
        {
                opj_free(l_tmp_data);
                opj_free(l_tmp_ptr);
                pi_destroy(l_pi, l_bound);
                return 00;
        }
        memset(l_current_pi->include,0,l_tcp->numlayers * l_step_l* sizeof(OPJ_INT16));

        // special treatment for the first packet iterator
        l_current_comp = l_current_pi->comps;
        l_img_comp = p_image->comps;
        l_tccp = l_tcp->tccps;
        l_current_pi->tx0 = l_tx0;
        l_current_pi->ty0 = l_ty0;
        l_current_pi->tx1 = l_tx1;
        l_current_pi->ty1 = l_ty1;
        l_current_pi->dx = l_dx_min;
        l_current_pi->dy = l_dy_min;
        l_current_pi->step_p = l_step_p;
        l_current_pi->step_c = l_step_c;
        l_current_pi->step_r = l_step_r;
        l_current_pi->step_l = l_step_l;

        /* allocation for components and number of components has already been calculated by pi_create */
        for
                (compno = 0; compno < l_current_pi->numcomps; ++compno)
        {
                opj_pi_resolution_t *l_res = l_current_comp->resolutions;
                l_encoding_value_ptr = l_tmp_ptr[compno];

                l_current_comp->dx = l_img_comp->dx;
                l_current_comp->dy = l_img_comp->dy;
                /* resolutions have already been initialized */
                for
                        (resno = 0; resno < l_current_comp->numresolutions; resno++)
                {
                        l_res->pdx = *(l_encoding_value_ptr++);
                        l_res->pdy = *(l_encoding_value_ptr++);
                        l_res->pw =  *(l_encoding_value_ptr++);
                        l_res->ph =  *(l_encoding_value_ptr++);
                        ++l_res;
                }
                ++l_current_comp;
                ++l_img_comp;
                ++l_tccp;
        }
        ++l_current_pi;

        for
                (pino = 1 ; pino<l_bound ; ++pino )
        {
                opj_pi_comp_t *l_current_comp = l_current_pi->comps;
                opj_image_comp_t * l_img_comp = p_image->comps;
                l_tccp = l_tcp->tccps;

                l_current_pi->tx0 = l_tx0;
                l_current_pi->ty0 = l_ty0;
                l_current_pi->tx1 = l_tx1;
                l_current_pi->ty1 = l_ty1;
                l_current_pi->dx = l_dx_min;
                l_current_pi->dy = l_dy_min;
                l_current_pi->step_p = l_step_p;
                l_current_pi->step_c = l_step_c;
                l_current_pi->step_r = l_step_r;
                l_current_pi->step_l = l_step_l;

                /* allocation for components and number of components has already been calculated by pi_create */
                for
                        (compno = 0; compno < l_current_pi->numcomps; ++compno)
                {
                        opj_pi_resolution_t *l_res = l_current_comp->resolutions;
                        l_encoding_value_ptr = l_tmp_ptr[compno];

                        l_current_comp->dx = l_img_comp->dx;
                        l_current_comp->dy = l_img_comp->dy;
                        /* resolutions have already been initialized */
                        for
                                (resno = 0; resno < l_current_comp->numresolutions; resno++)
                        {
                                l_res->pdx = *(l_encoding_value_ptr++);
                                l_res->pdy = *(l_encoding_value_ptr++);
                                l_res->pw =  *(l_encoding_value_ptr++);
                                l_res->ph =  *(l_encoding_value_ptr++);
                                ++l_res;
                        }
                        ++l_current_comp;
                        ++l_img_comp;
                        ++l_tccp;
                }
                // special treatment
                l_current_pi->include = (l_current_pi-1)->include;
                ++l_current_pi;
        }
        opj_free(l_tmp_data);
        l_tmp_data = 00;
        opj_free(l_tmp_ptr);
        l_tmp_ptr = 00;
        if
                (l_tcp->POC && ( p_cp->m_specific_param.m_enc.m_cinema || p_t2_mode == FINAL_PASS))
        {
                pi_update_encode_poc_and_final(p_cp,p_tile_no,l_tx0,l_tx1,l_ty0,l_ty1,l_max_prec,l_max_res,l_dx_min,l_dy_min);
        }
        else
        {
                pi_update_encode_not_poc(p_cp,p_image->numcomps,p_tile_no,l_tx0,l_tx1,l_ty0,l_ty1,l_max_prec,l_max_res,l_dx_min,l_dy_min);
        }
        return l_pi;
}

/**
 * Updates the encoding parameters of the codec.
 *
 * @param        p_image                the image being encoded.
 * @param        p_cp                the coding parameters.
 * @param        p_tile_no        index of the tile being encoded.
*/
void pi_update_encoding_parameters(
                                                                                const opj_image_t *p_image,
                                                                                opj_cp_t *p_cp,
                                                                                OPJ_UINT32 p_tile_no
                                                                                )
{
        // encoding prameters to set
        OPJ_UINT32 l_max_res;
        OPJ_UINT32 l_max_prec;
        OPJ_INT32 l_tx0,l_tx1,l_ty0,l_ty1;
        OPJ_UINT32 l_dx_min,l_dy_min;

        // pointers
        opj_tcp_t *l_tcp = 00;

        // preconditions in debug
        assert(p_cp != 00);
        assert(p_image != 00);
        assert(p_tile_no < p_cp->tw * p_cp->th);

        l_tcp = &(p_cp->tcps[p_tile_no]);
        // get encoding parameters
        get_encoding_parameters(p_image,p_cp,p_tile_no,&l_tx0,&l_tx1,&l_ty0,&l_ty1,&l_dx_min,&l_dy_min,&l_max_prec,&l_max_res);
        if
                (l_tcp->POC)
        {
                pi_update_encode_poc_and_final(p_cp,p_tile_no,l_tx0,l_tx1,l_ty0,l_ty1,l_max_prec,l_max_res,l_dx_min,l_dy_min);
        }
        else
        {
                pi_update_encode_not_poc(p_cp,p_image->numcomps,p_tile_no,l_tx0,l_tx1,l_ty0,l_ty1,l_max_prec,l_max_res,l_dx_min,l_dy_min);
        }
}


/**
 * Gets the encoding parameters needed to update the coding parameters and all the pocs.
 *
 * @param        p_image                        the image being encoded.
 * @param        p_cp                        the coding parameters.
 * @param        p_tileno                        the tile index of the tile being encoded.
 * @param        p_tx0                        pointer that will hold the X0 parameter for the tile
 * @param        p_tx1                        pointer that will hold the X1 parameter for the tile
 * @param        p_ty0                        pointer that will hold the Y0 parameter for the tile
 * @param        p_ty1                        pointer that will hold the Y1 parameter for the tile
 * @param        p_max_prec                pointer that will hold the the maximum precision for all the bands of the tile
 * @param        p_max_res                pointer that will hold the the maximum number of resolutions for all the poc inside the tile.
 * @param        dx_min                        pointer that will hold the the minimum dx of all the components of all the resolutions for the tile.
 * @param        dy_min                        pointer that will hold the the minimum dy of all the components of all the resolutions for the tile.
 */
void get_encoding_parameters(
                                                                const opj_image_t *p_image,
                                                                const opj_cp_t *p_cp,
                                                                OPJ_UINT32 p_tileno,
                                                                OPJ_INT32 * p_tx0,
                                                                OPJ_INT32  * p_tx1,
                                                                OPJ_INT32  * p_ty0,
                                                                OPJ_INT32  * p_ty1,
                                                                OPJ_UINT32 * p_dx_min,
                                                                OPJ_UINT32 * p_dy_min,
                                                                OPJ_UINT32 * p_max_prec,
                                                                OPJ_UINT32 * p_max_res
                                                        )
{
        // loop
        OPJ_UINT32  compno, resno;
        // pointers
        const opj_tcp_t *l_tcp = 00;
        const opj_tccp_t * l_tccp = 00;
        const opj_image_comp_t * l_img_comp = 00;

        // position in x and y of tile
        OPJ_UINT32 p, q;

        // preconditions in debug
        assert(p_cp != 00);
        assert(p_image != 00);
        assert(p_tileno < p_cp->tw * p_cp->th);

        // initializations
        l_tcp = &p_cp->tcps [p_tileno];
        l_img_comp = p_image->comps;
        l_tccp = l_tcp->tccps;

        /* here calculation of tx0, tx1, ty0, ty1, maxprec, dx and dy */
        p = p_tileno % p_cp->tw;
        q = p_tileno / p_cp->tw;

        // find extent of tile
        *p_tx0 = int_max(p_cp->tx0 + p * p_cp->tdx, p_image->x0);
        *p_tx1 = int_min(p_cp->tx0 + (p + 1) * p_cp->tdx, p_image->x1);
        *p_ty0 = int_max(p_cp->ty0 + q * p_cp->tdy, p_image->y0);
        *p_ty1 = int_min(p_cp->ty0 + (q + 1) * p_cp->tdy, p_image->y1);

        // max precision is 0 (can only grow)
        *p_max_prec = 0;
        *p_max_res = 0;

        // take the largest value for dx_min and dy_min
        *p_dx_min = 0x7fffffff;
        *p_dy_min  = 0x7fffffff;

        for
                (compno = 0; compno < p_image->numcomps; ++compno)
        {
                // aritmetic variables to calculate
                OPJ_UINT32 l_level_no;
                OPJ_INT32 l_rx0, l_ry0, l_rx1, l_ry1;
                OPJ_INT32 l_px0, l_py0, l_px1, py1;
                OPJ_UINT32 l_pdx, l_pdy;
                OPJ_UINT32 l_pw, l_ph;
                OPJ_UINT32 l_product;
                OPJ_INT32 l_tcx0, l_tcy0, l_tcx1, l_tcy1;

                l_tcx0 = int_ceildiv(*p_tx0, l_img_comp->dx);
                l_tcy0 = int_ceildiv(*p_ty0, l_img_comp->dy);
                l_tcx1 = int_ceildiv(*p_tx1, l_img_comp->dx);
                l_tcy1 = int_ceildiv(*p_ty1, l_img_comp->dy);
                if
                        (l_tccp->numresolutions > *p_max_res)
                {
                        *p_max_res = l_tccp->numresolutions;
                }
                // use custom size for precincts
                for
                        (resno = 0; resno < l_tccp->numresolutions; ++resno)
                {
                        OPJ_UINT32 l_dx, l_dy;
                        // precinct width and height
                        l_pdx = l_tccp->prcw[resno];
                        l_pdy = l_tccp->prch[resno];

                        l_dx = l_img_comp->dx * (1 << (l_pdx + l_tccp->numresolutions - 1 - resno));
                        l_dy = l_img_comp->dy * (1 << (l_pdy + l_tccp->numresolutions - 1 - resno));
                        // take the minimum size for dx for each comp and resolution
                        *p_dx_min = uint_min(*p_dx_min, l_dx);
                        *p_dy_min = uint_min(*p_dy_min, l_dy);
                        // various calculations of extents
                        l_level_no = l_tccp->numresolutions - 1 - resno;
                        l_rx0 = int_ceildivpow2(l_tcx0, l_level_no);
                        l_ry0 = int_ceildivpow2(l_tcy0, l_level_no);
                        l_rx1 = int_ceildivpow2(l_tcx1, l_level_no);
                        l_ry1 = int_ceildivpow2(l_tcy1, l_level_no);
                        l_px0 = int_floordivpow2(l_rx0, l_pdx) << l_pdx;
                        l_py0 = int_floordivpow2(l_ry0, l_pdy) << l_pdy;
                        l_px1 = int_ceildivpow2(l_rx1, l_pdx) << l_pdx;
                        py1 = int_ceildivpow2(l_ry1, l_pdy) << l_pdy;
                        l_pw = (l_rx0==l_rx1)?0:((l_px1 - l_px0) >> l_pdx);
                        l_ph = (l_ry0==l_ry1)?0:((py1 - l_py0) >> l_pdy);
                        l_product = l_pw * l_ph;
                        // update precision
                        if
                                (l_product > *p_max_prec)
                        {
                                *p_max_prec = l_product;
                        }
                }
                ++l_img_comp;
                ++l_tccp;
        }
}

/**
 * Gets the encoding parameters needed to update the coding parameters and all the pocs.
 * The precinct widths, heights, dx and dy for each component at each resolution will be stored as well.
 * the last parameter of the function should be an array of pointers of size nb components, each pointer leading
 * to an area of size 4 * max_res. The data is stored inside this area with the following pattern :
 * dx_compi_res0 , dy_compi_res0 , w_compi_res0, h_compi_res0 , dx_compi_res1 , dy_compi_res1 , w_compi_res1, h_compi_res1 , ...
 *
 * @param        p_image                        the image being encoded.
 * @param        p_cp                        the coding parameters.
 * @param        tileno                        the tile index of the tile being encoded.
 * @param        p_tx0                        pointer that will hold the X0 parameter for the tile
 * @param        p_tx1                        pointer that will hold the X1 parameter for the tile
 * @param        p_ty0                        pointer that will hold the Y0 parameter for the tile
 * @param        p_ty1                        pointer that will hold the Y1 parameter for the tile
 * @param        p_max_prec                pointer that will hold the the maximum precision for all the bands of the tile
 * @param        p_max_res                pointer that will hold the the maximum number of resolutions for all the poc inside the tile.
 * @param        dx_min                        pointer that will hold the the minimum dx of all the components of all the resolutions for the tile.
 * @param        dy_min                        pointer that will hold the the minimum dy of all the components of all the resolutions for the tile.
 * @param        p_resolutions        pointer to an area corresponding to the one described above.
 */
void get_all_encoding_parameters(
                                                                const opj_image_t *p_image,
                                                                const opj_cp_t *p_cp,
                                                                OPJ_UINT32 tileno,
                                                                OPJ_INT32 * p_tx0,
                                                                OPJ_INT32 * p_tx1,
                                                                OPJ_INT32 * p_ty0,
                                                                OPJ_INT32 * p_ty1,
                                                                OPJ_UINT32 * p_dx_min,
                                                                OPJ_UINT32 * p_dy_min,
                                                                OPJ_UINT32 * p_max_prec,
                                                                OPJ_UINT32 * p_max_res,
                                                                OPJ_UINT32 ** p_resolutions
                                                        )
{
        // loop
        OPJ_UINT32 compno, resno;

        // pointers
        const opj_tcp_t *tcp = 00;
        const opj_tccp_t * l_tccp = 00;
        const opj_image_comp_t * l_img_comp = 00;

        // to store l_dx, l_dy, w and h for each resolution and component.
        OPJ_UINT32 * lResolutionPtr;

        // position in x and y of tile
        OPJ_UINT32 p, q;

        // preconditions in debug
        assert(p_cp != 00);
        assert(p_image != 00);
        assert(tileno < p_cp->tw * p_cp->th);

        // initializations
        tcp = &p_cp->tcps [tileno];
        l_tccp = tcp->tccps;
        l_img_comp = p_image->comps;

        // position in x and y of tile

        p = tileno % p_cp->tw;
        q = tileno / p_cp->tw;

        /* here calculation of tx0, tx1, ty0, ty1, maxprec, l_dx and l_dy */
        *p_tx0 = int_max(p_cp->tx0 + p * p_cp->tdx, p_image->x0);
        *p_tx1 = int_min(p_cp->tx0 + (p + 1) * p_cp->tdx, p_image->x1);
        *p_ty0 = int_max(p_cp->ty0 + q * p_cp->tdy, p_image->y0);
        *p_ty1 = int_min(p_cp->ty0 + (q + 1) * p_cp->tdy, p_image->y1);

        // max precision and resolution is 0 (can only grow)
        *p_max_prec = 0;
        *p_max_res = 0;

        // take the largest value for dx_min and dy_min
        *p_dx_min = 0x7fffffff;
        *p_dy_min  = 0x7fffffff;

        for
                (compno = 0; compno < p_image->numcomps; ++compno)
        {
                // aritmetic variables to calculate
                OPJ_UINT32 l_level_no;
                OPJ_INT32 l_rx0, l_ry0, l_rx1, l_ry1;
                OPJ_INT32 l_px0, l_py0, l_px1, py1;
                OPJ_UINT32 l_product;
                OPJ_INT32 l_tcx0, l_tcy0, l_tcx1, l_tcy1;
                OPJ_UINT32 l_pdx, l_pdy , l_pw , l_ph;

                lResolutionPtr = p_resolutions[compno];

                l_tcx0 = int_ceildiv(*p_tx0, l_img_comp->dx);
                l_tcy0 = int_ceildiv(*p_ty0, l_img_comp->dy);
                l_tcx1 = int_ceildiv(*p_tx1, l_img_comp->dx);
                l_tcy1 = int_ceildiv(*p_ty1, l_img_comp->dy);
                if
                        (l_tccp->numresolutions > *p_max_res)
                {
                        *p_max_res = l_tccp->numresolutions;
                }

                // use custom size for precincts
                l_level_no = l_tccp->numresolutions - 1;
                for
                        (resno = 0; resno < l_tccp->numresolutions; ++resno)
                {
                        OPJ_UINT32 l_dx, l_dy;
                        // precinct width and height
                        l_pdx = l_tccp->prcw[resno];
                        l_pdy = l_tccp->prch[resno];
                        *lResolutionPtr++ = l_pdx;
                        *lResolutionPtr++ = l_pdy;
                        l_dx = l_img_comp->dx * (1 << (l_pdx + l_level_no));
                        l_dy = l_img_comp->dy * (1 << (l_pdy + l_level_no));
                        // take the minimum size for l_dx for each comp and resolution
                        *p_dx_min = int_min(*p_dx_min, l_dx);
                        *p_dy_min = int_min(*p_dy_min, l_dy);
                        // various calculations of extents

                        l_rx0 = int_ceildivpow2(l_tcx0, l_level_no);
                        l_ry0 = int_ceildivpow2(l_tcy0, l_level_no);
                        l_rx1 = int_ceildivpow2(l_tcx1, l_level_no);
                        l_ry1 = int_ceildivpow2(l_tcy1, l_level_no);
                        l_px0 = int_floordivpow2(l_rx0, l_pdx) << l_pdx;
                        l_py0 = int_floordivpow2(l_ry0, l_pdy) << l_pdy;
                        l_px1 = int_ceildivpow2(l_rx1, l_pdx) << l_pdx;
                        py1 = int_ceildivpow2(l_ry1, l_pdy) << l_pdy;
                        l_pw = (l_rx0==l_rx1)?0:((l_px1 - l_px0) >> l_pdx);
                        l_ph = (l_ry0==l_ry1)?0:((py1 - l_py0) >> l_pdy);
                        *lResolutionPtr++ = l_pw;
                        *lResolutionPtr++ = l_ph;
                        l_product = l_pw * l_ph;
                        // update precision
                        if
                                (l_product > *p_max_prec)
                        {
                                *p_max_prec = l_product;
                        }
                        --l_level_no;
                }
                ++l_tccp;
                ++l_img_comp;
        }
}

/**
 * Allocates memory for a packet iterator. Data and data sizes are set by this operation.
 * No other data is set. The include section of the packet  iterator is not allocated.
 *
 * @param        p_image                the image used to initialize the packet iterator (in fact only the number of components is relevant.
 * @param        p_cp                the coding parameters.
 * @param        p_tile_no        the index of the tile from which creating the packet iterator.
 */
opj_pi_iterator_t * pi_create(
                                                                const opj_image_t *image,
                                                                const opj_cp_t *cp,
                                                                OPJ_UINT32 tileno
                                                        )
{
        // loop
        OPJ_UINT32 pino, compno;
        // number of poc in the p_pi
        OPJ_UINT32 l_poc_bound;

        // pointers to tile coding parameters and components.
        opj_pi_iterator_t *l_pi = 00;
        opj_tcp_t *tcp = 00;
        const opj_tccp_t *tccp = 00;

        // current packet iterator being allocated
        opj_pi_iterator_t *l_current_pi = 00;

        // preconditions in debug
        assert(cp != 00);
        assert(image != 00);
        assert(tileno < cp->tw * cp->th);

        // initializations
        tcp = &cp->tcps[tileno];
        l_poc_bound = tcp->numpocs+1;


        // memory allocations
        l_pi = (opj_pi_iterator_t*) opj_calloc((l_poc_bound), sizeof(opj_pi_iterator_t));

        if
                (!l_pi)
        {
                return 00;
        }
        memset(l_pi,0,l_poc_bound * sizeof(opj_pi_iterator_t));
        l_current_pi = l_pi;
        for
                (pino = 0; pino < l_poc_bound ; ++pino)
        {
                l_current_pi->comps = (opj_pi_comp_t*) opj_calloc(image->numcomps, sizeof(opj_pi_comp_t));
                if
                        (! l_current_pi->comps)
                {
                        pi_destroy(l_pi, l_poc_bound);
                        return 00;
                }
                l_current_pi->numcomps = image->numcomps;
                memset(l_current_pi->comps,0,image->numcomps * sizeof(opj_pi_comp_t));
                for
                        (compno = 0; compno < image->numcomps; ++compno)
                {
                        opj_pi_comp_t *comp = &l_current_pi->comps[compno];
                        tccp = &tcp->tccps[compno];
                        comp->resolutions = (opj_pi_resolution_t*) opj_malloc(tccp->numresolutions * sizeof(opj_pi_resolution_t));
                        if
                                (!comp->resolutions)
                        {
                                pi_destroy(l_pi, l_poc_bound);
                                return 00;
                        }
                        comp->numresolutions = tccp->numresolutions;
                        memset(comp->resolutions,0,tccp->numresolutions * sizeof(opj_pi_resolution_t));
                }
                ++l_current_pi;
        }
        return l_pi;
}

/**
 * Updates the coding parameters if the encoding is used with Progression order changes and final (or cinema parameters are used).
 *
 * @param        p_cp                the coding parameters to modify
 * @param        p_tileno        the tile index being concerned.
 * @param        p_tx0                X0 parameter for the tile
 * @param        p_tx1                X1 parameter for the tile
 * @param        p_ty0                Y0 parameter for the tile
 * @param        p_ty1                Y1 parameter for the tile
 * @param        p_max_prec        the maximum precision for all the bands of the tile
 * @param        p_max_res        the maximum number of resolutions for all the poc inside the tile.
 * @param        dx_min                the minimum dx of all the components of all the resolutions for the tile.
 * @param        dy_min                the minimum dy of all the components of all the resolutions for the tile.
 */
void pi_update_encode_poc_and_final (
                                                                         opj_cp_t *p_cp,
                                                                         OPJ_UINT32 p_tileno,
                                                                         OPJ_INT32 p_tx0,
                                                                         OPJ_INT32 p_tx1,
                                                                         OPJ_INT32 p_ty0,
                                                                         OPJ_INT32 p_ty1,
                                                                         OPJ_UINT32 p_max_prec,
                                                                         OPJ_UINT32 p_max_res,
                                     OPJ_UINT32 p_dx_min,
                                                                         OPJ_UINT32 p_dy_min)
{
        // loop
        OPJ_UINT32 pino;
        // tile coding parameter
        opj_tcp_t *l_tcp = 00;
        // current poc being updated
        opj_poc_t * l_current_poc = 00;

        // number of pocs
        OPJ_UINT32 l_poc_bound;

        // preconditions in debug
        assert(p_cp != 00);
        assert(p_tileno < p_cp->tw * p_cp->th);

        // initializations
        l_tcp = &p_cp->tcps [p_tileno];
        /* number of iterations in the loop */
        l_poc_bound = l_tcp->numpocs+1;

        // start at first element, and to make sure the compiler will not make a calculation each time in the loop
        // store a pointer to the current element to modify rather than l_tcp->pocs[i]
        l_current_poc = l_tcp->pocs;

        l_current_poc->compS = l_current_poc->compno0;
        l_current_poc->compE = l_current_poc->compno1;
        l_current_poc->resS = l_current_poc->resno0;
        l_current_poc->resE = l_current_poc->resno1;
        l_current_poc->layE = l_current_poc->layno1;

        // special treatment for the first element
        l_current_poc->layS = 0;
        l_current_poc->prg  = l_current_poc->prg1;
        l_current_poc->prcS = 0;

        l_current_poc->prcE = p_max_prec;
        l_current_poc->txS = p_tx0;
        l_current_poc->txE = p_tx1;
        l_current_poc->tyS = p_ty0;
        l_current_poc->tyE = p_ty1;
        l_current_poc->dx = p_dx_min;
        l_current_poc->dy = p_dy_min;

        ++ l_current_poc;
        for
                (pino = 1;pino < l_poc_bound ; ++pino)
        {
                l_current_poc->compS = l_current_poc->compno0;
                l_current_poc->compE= l_current_poc->compno1;
                l_current_poc->resS = l_current_poc->resno0;
                l_current_poc->resE = l_current_poc->resno1;
                l_current_poc->layE = l_current_poc->layno1;
                l_current_poc->prg  = l_current_poc->prg1;
                l_current_poc->prcS = 0;
                // special treatment here different from the first element
                l_current_poc->layS = (l_current_poc->layE > (l_current_poc-1)->layE) ? l_current_poc->layE : 0;

                l_current_poc->prcE = p_max_prec;
                l_current_poc->txS = p_tx0;
                l_current_poc->txE = p_tx1;
                l_current_poc->tyS = p_ty0;
                l_current_poc->tyE = p_ty1;
                l_current_poc->dx = p_dx_min;
                l_current_poc->dy = p_dy_min;
                ++ l_current_poc;
        }
}

/**
 * Updates the coding parameters if the encoding is not used with Progression order changes and final (and cinema parameters are used).
 *
 * @param        p_cp                the coding parameters to modify
 * @param        p_tileno        the tile index being concerned.
 * @param        p_tx0                X0 parameter for the tile
 * @param        p_tx1                X1 parameter for the tile
 * @param        p_ty0                Y0 parameter for the tile
 * @param        p_ty1                Y1 parameter for the tile
 * @param        p_max_prec        the maximum precision for all the bands of the tile
 * @param        p_max_res        the maximum number of resolutions for all the poc inside the tile.
 * @param        dx_min                the minimum dx of all the components of all the resolutions for the tile.
 * @param        dy_min                the minimum dy of all the components of all the resolutions for the tile.
 */
void pi_update_encode_not_poc (
                                                                opj_cp_t *p_cp,
                                                                OPJ_UINT32 p_num_comps,
                                                                OPJ_UINT32 p_tileno,
                                                                OPJ_INT32 p_tx0,
                                                                OPJ_INT32 p_tx1,
                                                                OPJ_INT32 p_ty0,
                                                                OPJ_INT32 p_ty1,
                                                                OPJ_UINT32 p_max_prec,
                                                                OPJ_UINT32 p_max_res,
                                OPJ_UINT32 p_dx_min,
                                                                OPJ_UINT32 p_dy_min)
{
        // loop
        OPJ_UINT32 pino;
        // tile coding parameter
        opj_tcp_t *l_tcp = 00;
        // current poc being updated
        opj_poc_t * l_current_poc = 00;
        // number of pocs
        OPJ_UINT32 l_poc_bound;

        // preconditions in debug
        assert(p_cp != 00);
        assert(p_tileno < p_cp->tw * p_cp->th);

        // initializations
        l_tcp = &p_cp->tcps [p_tileno];

        /* number of iterations in the loop */
        l_poc_bound = l_tcp->numpocs+1;

        // start at first element, and to make sure the compiler will not make a calculation each time in the loop
        // store a pointer to the current element to modify rather than l_tcp->pocs[i]
        l_current_poc = l_tcp->pocs;

        for
                (pino = 0; pino < l_poc_bound ; ++pino)
        {
                l_current_poc->compS = 0;
                l_current_poc->compE = p_num_comps;/*p_image->numcomps;*/
                l_current_poc->resS = 0;
                l_current_poc->resE = p_max_res;
                l_current_poc->layS = 0;
                l_current_poc->layE = l_tcp->numlayers;
                l_current_poc->prg  = l_tcp->prg;
                l_current_poc->prcS = 0;
                l_current_poc->prcE = p_max_prec;
                l_current_poc->txS = p_tx0;
                l_current_poc->txE = p_tx1;
                l_current_poc->tyS = p_ty0;
                l_current_poc->tyE = p_ty1;
                l_current_poc->dx = p_dx_min;
                l_current_poc->dy = p_dy_min;
                ++ l_current_poc;
        }
}

/**
 * Destroys a packet iterator array.
 *
 * @param        p_pi                        the packet iterator array to destroy.
 * @param        p_nb_elements        the number of elements in the array.
 */
void pi_destroy(
                                opj_pi_iterator_t *p_pi,
                                OPJ_UINT32 p_nb_elements)
{
        OPJ_UINT32 compno, pino;
        opj_pi_iterator_t *l_current_pi = p_pi;
        if
                (p_pi)
        {
                if
                        (p_pi->include)
                {
                        opj_free(p_pi->include);
                        p_pi->include = 00;
                }
                // TODO
                for
                        (pino = 0; pino < p_nb_elements; ++pino)
                {
                        if
                                (l_current_pi->comps)
                        {
                                opj_pi_comp_t *l_current_component = l_current_pi->comps;
                                for
                                        (compno = 0; compno < l_current_pi->numcomps; compno++)
                                {
                                        if
                                                (l_current_component->resolutions)
                                        {
                                                opj_free(l_current_component->resolutions);
                                                l_current_component->resolutions = 00;
                                        }
                                        ++l_current_component;
                                }
                                opj_free(l_current_pi->comps);
                                l_current_pi->comps = 0;
                        }
                        ++l_current_pi;
                }
                opj_free(p_pi);
        }
}

bool pi_next(opj_pi_iterator_t * pi) {
        switch (pi->poc.prg) {
                case LRCP:
                        return pi_next_lrcp(pi);
                case RLCP:
                        return pi_next_rlcp(pi);
                case RPCL:
                        return pi_next_rpcl(pi);
                case PCRL:
                        return pi_next_pcrl(pi);
                case CPRL:
                        return pi_next_cprl(pi);
                case PROG_UNKNOWN:
                        return false;
        }

        return false;
}

OPJ_INT32 pi_check_next_level(OPJ_INT32 pos,opj_cp_t *cp,OPJ_UINT32 tileno, OPJ_UINT32 pino, const OPJ_CHAR *prog)
{
        OPJ_INT32 i,l;
        opj_tcp_t *tcps =&cp->tcps[tileno];
        opj_poc_t *tcp = &tcps->pocs[pino];
        if(pos>=0){
                for(i=pos;pos>=0;i--){
                        switch(prog[i]){
                case 'R':
                        if(tcp->res_t==tcp->resE){
                                l=pi_check_next_level(pos-1,cp,tileno,pino,prog);
                                if(l==1){
                                        return 1;
                                }else{
                                        return 0;
                                }
                        }else{
                                return 1;
                        }
                        break;
                case 'C':
                        if(tcp->comp_t==tcp->compE){
                                l=pi_check_next_level(pos-1,cp,tileno,pino,prog);
                                if(l==1){
                                        return 1;
                                }else{
                                        return 0;
                                }
                        }else{
                                return 1;
                        }
                        break;
                case 'L':
                        if(tcp->lay_t==tcp->layE){
                                l=pi_check_next_level(pos-1,cp,tileno,pino,prog);
                                if(l==1){
                                        return 1;
                                }else{
                                        return 0;
                                }
                        }else{
                                return 1;
                        }
                        break;
                case 'P':
                        switch(tcp->prg){
                                case LRCP||RLCP:
                                        if(tcp->prc_t == tcp->prcE){
                                                l=pi_check_next_level(i-1,cp,tileno,pino,prog);
                                                if(l==1){
                                                        return 1;
                                                }else{
                                                        return 0;
                                                }
                                        }else{
                                                return 1;
                                        }
                                        break;
                        default:
                                if(tcp->tx0_t == tcp->txE){
                                        //TY
                                        if(tcp->ty0_t == tcp->tyE){
                                                l=pi_check_next_level(i-1,cp,tileno,pino,prog);
                                                if(l==1){
                                                        return 1;
                                                }else{
                                                        return 0;
                                                }
                                        }else{
                                                return 1;
                                        }//TY
                                }else{
                                        return 1;
                                }
                                break;
                        }//end case P
                }//end switch
                }//end for
        }//end if
        return 0;
}


void pi_create_encode( opj_pi_iterator_t *pi, opj_cp_t *cp,OPJ_UINT32 tileno, OPJ_UINT32 pino,OPJ_UINT32 tpnum, OPJ_INT32 tppos, J2K_T2_MODE t2_mode)
{
        const OPJ_CHAR *prog;
        OPJ_INT32 i,l;
        OPJ_UINT32 incr_top=1,resetX=0;
        opj_tcp_t *tcps =&cp->tcps[tileno];
        opj_poc_t *tcp= &tcps->pocs[pino];

        prog = j2k_convert_progression_order(tcp->prg);

        pi[pino].first = 1;
        pi[pino].poc.prg = tcp->prg;

        if(!(cp->m_specific_param.m_enc.m_tp_on&& ((!cp->m_specific_param.m_enc.m_cinema && (t2_mode == FINAL_PASS)) || cp->m_specific_param.m_enc.m_cinema))){
                pi[pino].poc.resno0 = tcp->resS;
                pi[pino].poc.resno1 = tcp->resE;
                pi[pino].poc.compno0 = tcp->compS;
                pi[pino].poc.compno1 = tcp->compE;
                pi[pino].poc.layno0 = tcp->layS;
                pi[pino].poc.layno1 = tcp->layE;
                pi[pino].poc.precno0 = tcp->prcS;
                pi[pino].poc.precno1 = tcp->prcE;
                pi[pino].poc.tx0 = tcp->txS;
                pi[pino].poc.ty0 = tcp->tyS;
                pi[pino].poc.tx1 = tcp->txE;
                pi[pino].poc.ty1 = tcp->tyE;
        }else {
                for(i=tppos+1;i<4;i++){
                        switch(prog[i]){
                        case 'R':
                                pi[pino].poc.resno0 = tcp->resS;
                                pi[pino].poc.resno1 = tcp->resE;
                                break;
                        case 'C':
                                pi[pino].poc.compno0 = tcp->compS;
                                pi[pino].poc.compno1 = tcp->compE;
                                break;
                        case 'L':
                                pi[pino].poc.layno0 = tcp->layS;
                                pi[pino].poc.layno1 = tcp->layE;
                                break;
                        case 'P':
                                switch(tcp->prg){
                                        case LRCP:
                                        case RLCP:
                                                pi[pino].poc.precno0 = tcp->prcS;
                                                pi[pino].poc.precno1 = tcp->prcE;
                                                break;
                                        default:
                                                pi[pino].poc.tx0 = tcp->txS;
                                                pi[pino].poc.ty0 = tcp->tyS;
                                                pi[pino].poc.tx1 = tcp->txE;
                                                pi[pino].poc.ty1 = tcp->tyE;
                                                break;
                                }
                                break;
                        }
                }

                if(tpnum==0){
                        for(i=tppos;i>=0;i--){
                                switch(prog[i]){
                                                case 'C':
                                                        tcp->comp_t = tcp->compS;
                                                        pi[pino].poc.compno0 = tcp->comp_t;
                                                        pi[pino].poc.compno1 = tcp->comp_t+1;
                                                        tcp->comp_t+=1;
                                                        break;
                                                case 'R':
                                                        tcp->res_t = tcp->resS;
                                                        pi[pino].poc.resno0 = tcp->res_t;
                                                        pi[pino].poc.resno1 = tcp->res_t+1;
                                                        tcp->res_t+=1;
                                                        break;
                                                case 'L':
                                                        tcp->lay_t = tcp->layS;
                                                        pi[pino].poc.layno0 = tcp->lay_t;
                                                        pi[pino].poc.layno1 = tcp->lay_t+1;
                                                        tcp->lay_t+=1;
                                                        break;
                                                case 'P':
                                                        switch(tcp->prg){
                                                                case LRCP:
                                                                case RLCP:
                                                                        tcp->prc_t = tcp->prcS;
                                                                        pi[pino].poc.precno0 = tcp->prc_t;
                                                                        pi[pino].poc.precno1 = tcp->prc_t+1;
                                                                        tcp->prc_t+=1;
                                                                        break;
                                                                default:
                                                                        tcp->tx0_t = tcp->txS;
                                                                        tcp->ty0_t = tcp->tyS;
                                                                        pi[pino].poc.tx0 = tcp->tx0_t;
                                                                        pi[pino].poc.tx1 = tcp->tx0_t + tcp->dx - (tcp->tx0_t % tcp->dx);
                                                                        pi[pino].poc.ty0 = tcp->ty0_t;
                                                                        pi[pino].poc.ty1 = tcp->ty0_t + tcp->dy - (tcp->ty0_t % tcp->dy);
                                                                        tcp->tx0_t = pi[pino].poc.tx1;
                                                                        tcp->ty0_t = pi[pino].poc.ty1;
                                                                        break;
                                                        }
                                                        break;
                                }
                        }
                }else{
                        for(i=tppos;i>=0;i--){
                                switch(prog[i]){
                                                case 'C':
                                                        pi[pino].poc.compno0 = tcp->comp_t-1;
                                                        pi[pino].poc.compno1 = tcp->comp_t;
                                                        break;
                                                case 'R':
                                                        pi[pino].poc.resno0 = tcp->res_t-1;
                                                        pi[pino].poc.resno1 = tcp->res_t;
                                                        break;
                                                case 'L':
                                                        pi[pino].poc.layno0 = tcp->lay_t-1;
                                                        pi[pino].poc.layno1 = tcp->lay_t;
                                                        break;
                                                case 'P':
                                                        switch(tcp->prg){
                                                                case LRCP:
                                                                case RLCP:
                                                                        pi[pino].poc.precno0 = tcp->prc_t-1;
                                                                        pi[pino].poc.precno1 = tcp->prc_t;
                                                                        break;
                                                                default:
                                                                        pi[pino].poc.tx0 = tcp->tx0_t - tcp->dx - (tcp->tx0_t % tcp->dx);
                                                                        pi[pino].poc.tx1 = tcp->tx0_t ;
                                                                        pi[pino].poc.ty0 = tcp->ty0_t - tcp->dy - (tcp->ty0_t % tcp->dy);
                                                                        pi[pino].poc.ty1 = tcp->ty0_t ;
                                                                        break;
                                                        }
                                                        break;
                                }
                                if(incr_top==1){
                                        switch(prog[i]){
                                                        case 'R':
                                                                if(tcp->res_t==tcp->resE){
                                                                        l=pi_check_next_level(i-1,cp,tileno,pino,prog);
                                                                        if(l==1){
                                                                                tcp->res_t = tcp->resS;
                                                                                pi[pino].poc.resno0 = tcp->res_t;
                                                                                pi[pino].poc.resno1 = tcp->res_t+1;
                                                                                tcp->res_t+=1;
                                                                                incr_top=1;
                                                                        }else{
                                                                                incr_top=0;
                                                                        }
                                                                }else{
                                                                        pi[pino].poc.resno0 = tcp->res_t;
                                                                        pi[pino].poc.resno1 = tcp->res_t+1;
                                                                        tcp->res_t+=1;
                                                                        incr_top=0;
                                                                }
                                                                break;
                                                        case 'C':
                                                                if(tcp->comp_t ==tcp->compE){
                                                                        l=pi_check_next_level(i-1,cp,tileno,pino,prog);
                                                                        if(l==1){
                                                                                tcp->comp_t = tcp->compS;
                                                                                pi[pino].poc.compno0 = tcp->comp_t;
                                                                                pi[pino].poc.compno1 = tcp->comp_t+1;
                                                                                tcp->comp_t+=1;
                                                                                incr_top=1;
                                                                        }else{
                                                                                incr_top=0;
                                                                        }
                                                                }else{
                                                                        pi[pino].poc.compno0 = tcp->comp_t;
                                                                        pi[pino].poc.compno1 = tcp->comp_t+1;
                                                                        tcp->comp_t+=1;
                                                                        incr_top=0;
                                                                }
                                                                break;
                                                        case 'L':
                                                                if(tcp->lay_t == tcp->layE){
                                                                        l=pi_check_next_level(i-1,cp,tileno,pino,prog);
                                                                        if(l==1){
                                                                                tcp->lay_t = tcp->layS;
                                                                                pi[pino].poc.layno0 = tcp->lay_t;
                                                                                pi[pino].poc.layno1 = tcp->lay_t+1;
                                                                                tcp->lay_t+=1;
                                                                                incr_top=1;
                                                                        }else{
                                                                                incr_top=0;
                                                                        }
                                                                }else{
                                                                        pi[pino].poc.layno0 = tcp->lay_t;
                                                                        pi[pino].poc.layno1 = tcp->lay_t+1;
                                                                        tcp->lay_t+=1;
                                                                        incr_top=0;
                                                                }
                                                                break;
                                                        case 'P':
                                                                switch(tcp->prg){
                                                                        case LRCP:
                                                                        case RLCP:
                                                                                if(tcp->prc_t == tcp->prcE){
                                                                                        l=pi_check_next_level(i-1,cp,tileno,pino,prog);
                                                                                        if(l==1){
                                                                                                tcp->prc_t = tcp->prcS;
                                                                                                pi[pino].poc.precno0 = tcp->prc_t;
                                                                                                pi[pino].poc.precno1 = tcp->prc_t+1;
                                                                                                tcp->prc_t+=1;
                                                                                                incr_top=1;
                                                                                        }else{
                                                                                                incr_top=0;
                                                                                        }
                                                                                }else{
                                                                                        pi[pino].poc.precno0 = tcp->prc_t;
                                                                                        pi[pino].poc.precno1 = tcp->prc_t+1;
                                                                                        tcp->prc_t+=1;
                                                                                        incr_top=0;
                                                                                }
                                                                                break;
                                                                        default:
                                                                                if(tcp->tx0_t >= tcp->txE){
                                                                                        if(tcp->ty0_t >= tcp->tyE){
                                                                                                l=pi_check_next_level(i-1,cp,tileno,pino,prog);
                                                                                                if(l==1){
                                                                                                        tcp->ty0_t = tcp->tyS;
                                                                                                        pi[pino].poc.ty0 = tcp->ty0_t;
                                                                                                        pi[pino].poc.ty1 = tcp->ty0_t + tcp->dy - (tcp->ty0_t % tcp->dy);
                                                                                                        tcp->ty0_t = pi[pino].poc.ty1;
                                                                                                        incr_top=1;resetX=1;
                                                                                                }else{
                                                                                                        incr_top=0;resetX=0;
                                                                                                }
                                                                                        }else{
                                                                                                pi[pino].poc.ty0 = tcp->ty0_t;
                                                                                                pi[pino].poc.ty1 = tcp->ty0_t + tcp->dy - (tcp->ty0_t % tcp->dy);
                                                                                                tcp->ty0_t = pi[pino].poc.ty1;
                                                                                                incr_top=0;resetX=1;
                                                                                        }
                                                                                        if(resetX==1){
                                                                                                tcp->tx0_t = tcp->txS;
                                                                                                pi[pino].poc.tx0 = tcp->tx0_t;
                                                                                                pi[pino].poc.tx1 = tcp->tx0_t + tcp->dx- (tcp->tx0_t % tcp->dx);
                                                                                                tcp->tx0_t = pi[pino].poc.tx1;
                                                                                        }
                                                                                }else{
                                                                                        pi[pino].poc.tx0 = tcp->tx0_t;
                                                                                        pi[pino].poc.tx1 = tcp->tx0_t + tcp->dx- (tcp->tx0_t % tcp->dx);
                                                                                        tcp->tx0_t = pi[pino].poc.tx1;
                                                                                        incr_top=0;
                                                                                }
                                                                                break;
                                                                }
                                                                break;
                                        }
                                }
                        }
                }
        }
}



